Electric-arc lamp.



G. OLIVER.

ELECTRIC ABU Lm.

APPLIOATIOH Hmm JULI 1. 1907.

Patented Mar. 9,1909.

4 sHEETs-sHBET 1.

c. OLIVER. I ma LAMP.

LPPLIUAIOI FILED JULY 1, 1907.

Patented Mar. 9, 1909.

4 SHEETS-SHEET 2.

C. OLIVER.

ELECTRIC ABO LAMP. APPLIOATION FILED JULY 1, 1901.

914,869. Patented Mar. 9, 1909.

4 SHEETS-SHEET la.

c. OLIVER. ELECTRIC ARO LAMP. APPLIOATION FILED JULY 1, 1907.

Patented Mar. 9, 1909.

lll/1 CHARLES OLIVER, WOOLWICH, ENGLAND.

ELECTRIC-ABC LAMP.

Specication of ALetters Patent.

Patented March 9, 1Q09.

Application led Julyl, 1907. I No. 381,795.

To all whom it may concern:

Be it 'known that I, CHARLES OL1vER,-elec. trlcalwengmeer, 'a 'subject of the King of Great Britain, residing at Cambridge Place, Burrage Road, Woolwich, in the county of Kent,v En land, have invented certain new and usefu Improvements in or Relating to Electric-Arc Lamps, of ,which the following .1s a specification. v v

Heretofore it has been proposed to construct a flame arc lamp or other electric arc lamp having two magazines or storage clambers each located above the burning oint and each adapted to holda luralit o carbons which are automatica y an successively brought into position to act as the electrodes, and the saidtwo magazines so inclined to 'oneanother as to cause the down- Wardly projecting points of the electrodes to meet at the burnmg points, with electrically operated means to move one (or both) of .said magazines or storage .chambers toward other larc lamps to which same may be applicable and my present improvements com' etc. such Y*dash-pot and or away from the other to thereby move one electrodey toward or apart from the other for the purpose of 'striking and maintaining the are, vand-wherein motor driven mechanism suchas endless traveling chain-provided with ingers extending through a slot of the magazine-is arranged in conjunctionA with each magazine in suchwise as to positively engage each electrode in succession and pos1' tively force same downward as and'when 17equired for the purpose of feeding said elec- -trodes as set forth in my British Patent No.

Now my present provements relate more particularly to fia e arclampsof the aforesaid type but may be utilized with any prise or relate to z-Filst'. An inclosed mercury switch for automatically making and breaking contact in: the circuit of the electrically o erated means by which the electrode fee inclosed mercury switch must be exhausted of atmos heric air "as -far as practicable;v Second.

rran g and mounting the dashot-employe in conjunction with the soenoids-in suchwise asto enableisame to be readily detached for the u ose of cleaning rt ermore relates to certain improvements in the construction and mounting of such dash-pots. Thlrd.

Mean'sto-readlly disconnect the chains which form the feeding mechanism on the magai electrically connect the said contact polnts B g mechanism is operated; which zines fromthe electrically operated mea-ns which actuate such chainsfor the p'urpose ofy other details in the construction ofthe framed work of the lamp and the mounting of the various parts of the lamp thereon etc. etc.

I will now proceed to describe the several features of improvement with reference to the drawings hereunto annexed.

Figure -1 1s a View of a magazinearc lam havingv the present improvements app. ed thereto-With the .outer casing shown in section and' theinterior mechanism shown in elevation. Fig. 2 is asimilar view to Fig. 1

'adapted to swing or not otherwise movable) to facilitate. cleaningv 4 is a local vie'W-in elevation-onf-an e ar edAscale-f the electro motor and in-v close mercury switch. Fig. 5 isa vertical sectional view at right Iangles to Fi .4:` show- Y ingthesaid switch in section and a so showing the clutch ormeans interposed between the electro motor'v and the traveling endless driving'cliains operated by said electro mo' tor to enable the former to be readil diseonnected from the latter. l Fig. Gis a ocal vertical sectional view-.on :the same enlarged scale-of the dashotand means for detaching same.l l Fig. 7 1s a local sectional view-.

on..A an enlar edv scale-fof the detachable cou ling for t e removable magazine'.

- Y erc'ury switch.'-According to thisin'venamercuryv switch vA which is tion I employ a ody of mercury a hermetieally formed by inclosed ma vessel of any suitable-materialv 4 (advantageously a glass vessel inthe form of a horizontally disposed-glass tube hermetically sealed and exhausted of atmospheric.

air as far aspracticable) which is pivotally .mountedl or otherwise mounted so as to be adapted to be rocked or. 4moved in suchwise that `the mercury a'-'which normally lies' in one end of the vessel in Awhich the contact point -b is locatedand clear of, the lcontact pointV c located Within and at the other endof said vessel-can be caused to move over or on to'said contact point C so as to thereby nected.

and C; for example, as shown this mercury switch A may be pivotally mounted at B so as to be, adapted to be rocked upon its supports B on a bracket C carried in the frame D of the lamp at a convenient point just above (or it may be below) the ycradle or beam E which latter (when rocked by the regulating coils F) will by means of the connecting rod or link E tilt said mercury vessel vA from its normal position e. g. as shown in Figs. 2 and 5 (with the mercury off one of the contacts) into such position that the mercury connects both said contacts b and c whereby a local circuit is completed through the electro-magnet G which through the medium of the armature H operates the endless chains I (or other feeding mechanism) and upon movement of the armature H taking place toward its electro magnet G thereupon (through any suitable connection-such as the link h) it tilts or rocks the mercury vessel A back again to its normal position so that the mercury is removed from one of the contacts and the circuit'thereby broken through said electro-magnet G; and thus-the making and breaking of this local circuit through the nelectro-.Inagnet G which operates the feeding mechanism is effected through the medium of this'mercury switch which latter-being closed in-consequently is not affected in any Way by the fumes dust and deposits arising from the burning ointsof the carbons. Dash-pot.-`-The das -pot L employed in conjunction with the electro regulating solenoid 'or regulating coils F in such lamp is, according to the present invention, so arranged and mounted as to be readily detachable; this arrangement enabling such dash-pot to be readily cleaned etc. and furthermore the dash-pot itself .may be specially constructed arranged and mounted as follows:-The cylindrical or other barrel part Z of the dash-pot L is rovided with arigid extension rod or arm 1 the outer end L2 of which is hooked or formed in such wise as to be adapted to engage onorlover a pin M1Ain a tubular eXtension or recess M2 in the end of an arm or tube M attached to the solenoid core f which vis controlled by said dash-pot L; the arrange? ment being such as to ermit this hooked end L2 to be readily detac ed when the vdash-pot L itself is displaced-but, when the dash-pot L isv secured in its position then the joint is such that the `arts cannot become discon- The p unger rod or piston rod N oil! said dash-pot extends through the cap or cylinder end (which is advantageously a removable screw cap Z1) at the opposite end of the said cylinder or barrel l advantageously through a hole Z2 of larger diameter than the said plunger rod N so as to allow some amount of lateral play between saidv plunger rod N andthe cap 1; and in order to exclude dust etc.,from aining access to the interior ofthe barrel insert a closely fitting washer O on said lunger rod VN tween the plunger N1 and t e inside of the 'ca p 1 so that said washer O (fitting closely round the plunger rod may have lateral motion with said plunger rod N in any direction Within said barrel l. Means-such as a small clamping screw I) or other suitable clamping device-are Vmounted on the frame l) ol' the lamp adjacent to such dash-pot L or in such position as to be adapted to engage and trmly hold the outer end of the plunger rod N and thus iixedly hold same in operative position Vduring the working of the lamp while on releasing said plunger rod N from said clamping device P this enables the dash pot L to b e unhooked at its other end from the extension M on the solenoid core f and thereby enables the dash-pot'L to be detached and entirely removed from the lamp as aforesaid (for cleaning etc.)

Means to disconnect the feeding mechanlamr-The electrically operated means G and H which actuate the feeding mechanism, comprising the aforesaid endless chain I1 on each ma azineK1 K2 operate through the ratchet and pawls Q1 and Q2 arranged in suchwise as to 'prevent the return movement of the ratchet Q as the chains I are racked round; and I provide the weighted rod R on the'bell R1 (or any other suitable 'means) so that by moving this weighted rod R upwardly said ratchet `Q is released from said pawls Q1 and Q2 and thus enable the end less chains I to be moved freely by hand; and when said rod R is released the weight r on said rod R normallyA serves the additional purpose of maintaining said pawls Q1 and Q2 1n engagementwith the ratchet teeth Q-instead of employing springs for this purpose as heretofore. The ratchet Q is ixed rigidly on and to the shaft S which is rotated by the electro motor G H e. g. in the manner described in my former atent No. 15453 of 1904; and this shaft a o carries the couplings S1 and S2 b which the gear wheel such as S1 carrying t e endless chains I respectively are driven.

Detachable Magazne-In the ease where Aone of the magazines K1 and K2 is xed and only one K1`made1n'o`vable I so mount the non-swinging magazine K2 that it can be readily detached when desired to facilitate cleaning etc. and for this urpose the magazine K2 may advantageous y be! mounted and detached as follows z-At the lower end of the said magazine K2 same is provided with a lug or projection (or lugs or projections) which enters a corresponding socket or recess -or recesses 7c 7c1-adapted to receive same in the lower part of the frame .D of the lam while the upper end of the said magazine 2 isl attached by a screw or-other suitable means to a fixed part of theframe D for example by a single screw c2-passed through a lug k3 in the upper end of the magazine KZ-screwed nectec shoe magnet; to act on into a downwardly projecting xed bracket or extension d on the upper part of the frame D; so that by removing said screw k2 or attachment at the upper end of the magazine k2, the latter can be readily detached and removed from the lamp as will readily be seen. Framework carrying the lamp componen/taf The framework D on which the various components of the lam are mounted comprises thc to late D1 an the bottom plate D2 cony the rigid uprightsD. The lower art of said special frame is arranged in conjunction with an electro-magnet Y mounted on said frame and located midway or thereabout between the top and bottom plates D1 and D2 and in circuit with the lower parts of said uprights D which lower parts-for this'` purposeare formed of magnetic material (the upper parts of one or both of said uprights D being made of non-magnetic may terial) whereby the lower parts of said uprights D in conjunction with said electro` magnet Y serve, after the manner of a horsethe arc ame to deflect same. A v

1. In an electric arc lamp, the combination of a magazine carrying a lurality of electrodes and havingv near its liiwer end a curved lug, a supporting vframe inside the lamp provided wit a slot with which said lug is adapted Ato engage, and a detachable fas-` tening means securing the upper end of said magazine to said frame, substantially as descri ed.

tion of magazines 'containing electrodes,

2. In an electric arc lamp, the combina means for feeding said electrodes, a frame for I 3. In an electric arc lamp, the combina- *I tion of Vmagazines y. containing electrodes, -step-by-step means for feeding said elec trodes toward each other at intervals, including a toothed pivoted wheel, electrically voperated means for operating said feeding means,Y including a' 1pllvotalIy mounted inclosed mercury switc an electro magnet in `circuit with said switch and connections between the armature of said magnet and said toothed wheel, substantially asdescribed.

In witness whereof I have hereunto set m hand in presence-of two witnesses.

CHARLES OLIVER. y'

Witnesses:v

G. GANDER, F. L. RAND.. 

